HomeMy WebLinkAboutC103 STORMWATER POLLUTION PREVENTION PLAN DETAILSC103STORMWATER POLLUTION PREVENTION PLAN DETAILSW170206-C103 swppp detSHEET 1 OF 1
DRAWN
CHECKED
QA
MFG
APPROVED
DWG NOSIZE
SCALE
REV
REPLACEABLE SEDIMENT BAGS
WITH GEOTEXTILE FILTER FABRIC
LIFT HANDLES
STAINLESS
STEEL
CLAMPING
BAND
ALL PRODUCTS MANUFACTURED
BY INLET & PIPE PROTECTION, INC
DISTRIBUTED BY ADS
WWW.INLETFILTERS.COM
(866) 287-8655 PH
(630) 355-3477 FX
INFO@INLETFILTERS.COM
INSTALLATION:
1.
2.
REMOVE GRATE
DROP FLEXSTORM INLET FILTER ONTO
LOAD BEARING LIP OF CASTING OR
CONCRETE STRUCTURE
3.REPLACE GRATE
STANDARD 2"
OVERFLOW
AREA 11 GAUGE STEEL SUSPENSION SYSTEM
IPP
REVISIONS AND ISSUESW17.0206PREPARED FOR:11128 CROOKED STICK LANE, CARMEL, IN 46032PROJECT NO.
SHEET NO.CHECKED BY:DRAWN BY:RAMDESIGNED BY:DWG NAME:PROJECT NO.:W17.0206DATEBY12.20.2017BJSDATE:RAMKnow what's below.
before you dig.Call
R MAINTENANCE BUILDINGISSUED FOR CARMEL TAC11.09.2017BJSISSUED FOR STATE RELEASE11.27.2017BJSSTEVEN SCOTT RUCKER P.E. 11300279ENGINEERS317 | 846 - 6611800 | 452 - 6408317 | 843 - 0546 faxWEIHELand Surveying | Civil EngineeringLandscape ArchitectureALLAN H. WEIHE, P.E., L.S. - FOUNDER10505 N. College AvenueIndianapolis, Indiana 46280weihe.netBuild with confidence.SM12/20/2017
Part of the NW/4 of Section 14, Township 16 North, Range 4 East, Hamilton County, IndianaCTRWD SANITARY PERMIT APPLICATION11.21.2017WACISSUED FOR DRAINAGE REVISIONS12.08.2017BJSISSUED FOR DRAINAGE REVISIONS12.13.2017BJSISSUED FOR FINAL CONSTRUCTION DRAWINGS12.20.2017BJSINSTALLATION
1.REMOVE ALL VEGETATION AND OTHER OBJECTIONABLE MATERIAL FROM THE FOUNDATION AREA.
2.GRADE THE FOUNDATION AND CROWN FOR POSITIVE DRAINAGE.
3.INSTALL A CULVERT PIPE UNDER THE PAD IF NEEDED TO MAINTAIN PROPER PUBLIC ROAD DRAINAGE.
4.IF WET CONDITIONS ARE ANTICIPATED, PLACE GEOTEXTILE FABRIC ON THE GRADED FOUNDATION TO
IMPROVE STABILITY.
5.PLACE AGGREGATE (INDOT CA NO. 2) TO THE DIMENSIONS AND GRADE SHOWN IN THE CONSTRUCTION
PLANS, LEAVING THE SURFACE SMOOTH AND SLOPED FOR DRAINAGE.
6.WHERE POSSIBLE, DIVERT ALL STORM WATER RUNOFF AND DRAINAGE FROM THE TEMPORARY
CONSTRUCTION INGRESS/EGRESS PAD TO A SEDIMENT TRAP OR BASIN.
REFERENCED IN CHAPTER 7 PAGE 22 AND 23 IN INDIANA STORM WATER QUALITY MANUAL.
WIDTH:
(A) - 12' MINIMUM OR FULL WIDTH
OF ENTRANCE/EXIT DRIVE,
WHICHEVER IS GREATER.
TEMPORARY CONSTRUCTION INGRESS/EGRESS PAD
SMALL SITES - LESS THAN TWO ACRES (NO SCALE)
GEOTEXTILE FABRIC UNDERLINER
#2 STONE AGGREGATE
PUBLI
C
R
O
A
D
50' (MI
N
.
)
6" (MIN.)
NOTE:
USE THIS DETAIL IF EXISTING
ASPHALT HAS BEEN REMOVED.
MAINTENANCE OF EXISTING PAVEMENT
_ INSPECT DAILY.
_ CHECK FOR RUTTING AND BREAKDOWN OF ASPHALT.
_ IMMEDIATELY REMOVE MUD AND SEDIMENT TRACKED OR WASHED ONTO PRIVATE AND PUBLIC ROADS.
_ FLUSHING SHOULD ONLY BE USED IF THE WATER FROM THE CONSTRUCTION DRIVE CAN BE CONVEYED INTO A
SEDIMENT TRAP OR BASIN.
- IF PAVEMENT FAILS AND BREAKS APART DURING CONSTRUCTION, REPLACE PAVEMENT SECTION WITH THE
STONE AGGREGATE ENTRANCE DETAIL PROVIDED ON THIS SHEET.
SEDIMENTATION/SILT FENCE
MAXIMUM LOAD SLOPE AND DISTANCE FOR
WHICH A SILT FENCE IS APPLICABLE
INSTALLATION
PREFABRICATED SILT FENCE
1. LAY OUT THE LOCATION OF THE FENCE SO THAT IT IS PARALLEL TO THE CONTOUR OF THE SLOPE AND AT LEAST 10 FEET BEYOND THE TOE
OF THE SLOPE TO PROVIDE A SEDIMENT STORAGE AREA. TURN THE ENDS OF THE FENCE UP SLOPE SUCH THAT THE POINT OF CONTACT
BETWEEN THE GROUND AND THE BOTTOM OF THE FENCE END TERMINATES AT A HIGHER ELEVATION THAN THE TOP OF THE FENCE AT ITS
LOWEST POINT.
2. EXCAVATE AN EIGHT-INCH DEEP BY FOUR-INCH WIDE TRENCH ALONG THE ENTIRE LENGTH OF THE FENCE LINE. INSTALLATION BY PLOWING
IS ALSO ACCEPTABLE.
3. INSTALL THE SILT FENCE WITH THE FILTER FABRIC LOCATED ON THE UP-SLOPE SIDE OF THE EXCAVATED TRENCH AND THE SUPPORT POSTS
ON THE DOWN-SLOPE SIDE OF THE TRENCH.
4. DRIVE THE SUPPORT POSTS AT LEAST 18 INCHES INTO THE GROUND, TIGHTLY STRETCHING THE FABRIC BETWEEN THE POSTS AS EACH IS
DRIVEN INTO THE SOIL. MINIMUM OF 12 INCHES OF THE FILTER FABRIC SHOULD EXTEND INTO THE TRENCH.
5. LAY THE LOWER FOUR INCHES OF FILTER FABRIC ON THE BOTTOM OF THE TRENCH AND EXTEND IT TOWARD THE UP-SLOPE SIDE OF THE
TRENCH.
6. BACKFILL THE TRENCH WITH SOIL MATERIAL AND COMPACT IT IN PLACE.
NOTE: IF THE SILT FENCE IS BEING CONSTRUCTED ON-SITE, ATTACH THE FILTER FABRIC TO THE SUPPORT POSTS AND ATTACH WOODEN
LATHE TO SECURE THE FABRIC TO THE POSTS. ALLOW FOR AT LEAST 12 INCHES OF FABRIC BELOW GROUND LEVEL. COMPLETE THE SILT
FENCE INSTALLATION, FOLLOWING STEPS 1 THROUGH 6 ABOVE.
MAINTENANCE
_ INSPECT WITHIN 24 HOURS OF A RAIN EVENT AND AT LEAST ONCE EVERY SEVEN CALENDAR DAYS.
_ IF FENCE FABRIC TEARS, STARTS TO DECOMPOSE, OR IN ANY WAY BECOMES INEFFECTIVE, REPLACE THE AFFECTED PORTION IMMEDIATELY.
NOTE: ALL REPAIRS SHOULD MEET SPECIFICATIONS AS OUTLINED WITHIN THIS MEASURE.
_ REMOVE DEPOSITED SEDIMENT WHEN IT IS CAUSING THE FILTER FABRIC TO BULGE OR WHEN IT REACHES ONE-HALF THE HEIGHT OF THE
FENCE AT ITS LOWEST POINT. WHEN CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED, REMOVE THE FENCE AND SEDIMENT
DEPOSITS, GRADE THE SITE TO BLEND WITH THE SURROUNDING AREA, AND STABILIZE.
REFERENCE IN CHAPTER 7 PAGES 215-221 IN THE INDIANA STORM WATER QUALITY MANUAL
2-WOOD POST/STAKES WRAPPED
WITH SILT FENCE AND ROTATED AT
LEAST ONE FULL TURN TO SECURE
SILT FENCE END IN PLACE
SILT FENCE
SILT FENCE
POST
TO JOIN TO
ENDS OF TWO
FENCES.
EMBEDDED SILT FENCE MATERIAL MIN.
8" INTO GROUND W/ 4" LAID ALONG
BOTTOM OF TRENCH. SOIL SLICING IN
ACCORDANCE WITH ASTM D 6462 8.2.2 IS
ALSO ACCEPTABLE.
GEOTEXTILE FABRIC LAID ON
DOWN SLOPE SIDE AND
BOTTOM OF TRENCH
8"X4" TRENCH TO BE
BACKFILLED AND
COMPACTED
WOVEN FILTER FABRIC SILT
FENCE MATERIAL COVER
POST 2"X2" WOOD OR 1.33
LBS/FOOT STEEL 6' MAX.
SPACING
EMBEDDED SILT FENCE MATERIAL
MIN. 8" INTO GROUND W/ 4" LAID
ALONG BOTTOM OF TRENCH. SOIL
SLICING IN ACCORDANCE WITH
ASTM D 6462 8.2.2 IS ALSO
ACCEPTABLE.
GEOTEXTILE FABRIC LAID
ON DOWN SLOPE SIDE
AND BOTTOM OF TRENCH
POST 2"X2" WOOD OR 1.33 LBS/FOOT
STEEL 8' MAX. SPACING
WIRE FENCE 14 GUAGE (MIN)-6" MESH
REQ'D. IN SWALES OR AREAS OF
CONCENTRATED FLOW
NONWOVEN FILTER FABRIC -
SECURE TO POSTS WITH 2" LATH
2-WOOD POST/STAKES WRAPPED
WITH SILT FENCE AND ROTATED
AT LEAST TWO FULL TURNS TO
PROVIDE A SECURE CONNECTION
8"8"8"X4" TRENCH TO BE
BACKFILLED AND COMPACTED
POSTS: STEEL T OR U TYPE, OR 2"X2" HARD WOOD POST
FENCE: WOVEN WIRE, 14-1/2 GA., 6" MAX. MESH OPENING
FABRIC: IN ACCORDANCE WITH ASTM D 6461 LATEST EDITION.
LOAD SLOPE
LESS THAN 2%
2 TO 5%
5 TO 10%
10 TO 20%
MORE THAN 20%
MAX. DISTANCE ABOVE FENCE
100 FT.
75 FT.
50 FT.
25 FT.
15 FT.
WITHOUT WIRE SUPPORT WITH WIRE SUPPORT
(NO SCALE)
FLOW
FINISH GRADE
UNDISTURBED
GROUND
FLOW
FINISH GRADE
UNDISTURBED
GROUND
WOOD OR METAL
STAKES TO SECURE
THE STRAW BALES
(TWO PER BALE)
10 MIL. PLASTIC LINING
STRAW BALE (TYP)
SECTION LINE
STRAW BALE (TYP)
BINDING WIRE
WOOD OR METAL
STAKES (TYP) - 2 PER
BALENATIVE MATERIAL (OPTIONAL)
POLYETHYLENE LINING 10
MIL. EXTENDING OVER
BALES
(NO SCALE)TYPE "ABOVE GRADE
W/ STRAW BALES"4"WOOD OR METAL
STAKES TO SECURE
THE STRAW BALES
(TWO PER BALE)
POLYETHYLENE LINING 10
MIL. EXTENDING OVER
BALES
METAL PINS OR STAPLES
TO SECURE THE
POLYETHYLENE LINING TO
THE STRAW BALES
METAL PINS OR STAPLES
TO SECURE THE
POLYETHYLENE LINING
TO THE STRAW BALES
CONCRETE
WASHOUT
WOOD POST 3"x3"x8'
BLACK LETTER 6" HEIGHT
3/8" TREATED
PLYWOOD 48"x24"
PAINTED WHITE
0.5" LAG SCREWS
INSTALLATION
1.UTILIZE AND FOLLOW THE DESIGN IN THE STORM WATER POLLUTION PREVENTION
PLAN TO INSTALL THE SYSTEM.
2.DEPENDENT UPON THE TYPE OF SYSTEM, EITHER EXCAVATE THE PIT OR INSTALL
THE CONTAINMENT SYSTEM.
3.A BASE SHALL BE CONSTRUCTED AND PREPARED THAT IS FREE OF ROCKS AND
OTHER DEBRIS THAT MAY CAUSE TEARS OR PUNCTURES IN THE POLYETHYLENE
LINING.
4.INSTALL THE POLYETHYLENE LINING. FOR EXCAVATED SYSTEMS, THE LINING
SHOULD EXTEND OVER THE ENTIRE EXCAVATION. THE LINING FOR BERMED
SYSTEMS SHOULD BE INSTALLED OVER THE POOLING AREA WITH ENOUGH MATERIAL
TO EXTEND THE LINING OVER THE BERM OR CONTAINMENT SYSTEM. THE LINING
SHOULD BE SECURED WITH PINS, STAPLES, OR OTHER FASTENERS.
5.PLACE FLAGS, SAFETY FENCING, OR EQUIVALENT TO PROVIDE A BARRIER TO
CONSTRUCTION EQUIPMENT AND OTHER TRAFFIC.
6.PLACE A NON-COLLAPSING, NON-WATER HOLDING COVER OVER THE WASHOUT
FACILITY PRIOR TO A PREDICTED RAINFALL EVENT TO PREVENT ACCUMULATION OF
WATER AND POSSIBLE OVERFLOW OF THE SYSTEM (OPTIONAL).
7.INSTALL SIGNAGE THAT IDENTIFIES CONCRETE WASHOUT AREAS.
8.POST SIGNS DIRECTING CONTRACTORS AND SUPPLIERS TO DESIGNATED
LOCATIONS.
9.WHERE NECESSARY, PROVIDE STABLE INGRESS AND EGRESS (SEE TEMPORARY
CONSTRUCTION INGRESS/EGRESS PAD ON PAGE 17) OR ALTERNATIVE APPROACH
PAD FOR CONCRETE WASHOUT SYSTEMS.
10.USE A 10 MIL. POLYETHYLENE LINED DUMPSTER AS AN ALTERNATE.3'3'PLAN
1.ACTUAL LAYOUT DETERMINED IN
FIELD.
2.THE CONCRETE WASHOUT SIGN
SHALL BE INSTALLED WITHIN
30FT. OF THE TEMP. CONCRETE
WASHOUT FACILITY.
SECTION
CONCRETE WASHOUT
ALTERNATE
CONTRACTOR MAY USE A 10 MIL. POLYETHYLENE LINED DUMPSTER FOR CONCRETE WASHOUT.
MAINTENANCE
1.INSPECT DAILY AND AFTER EACH STORM EVENT FOR LEAKS, SPILLS, TRACKING OF
SOIL BY EQUIPMENT, AND THE POLYETHYLENE LINING FOR FAILURE.
2.ONCE CONCRETE WASTES HARDEN, REMOVE AND DISPOSE OF THE MATERIAL.
EXCESS CONCRETE SHOULD BE REMOVED WHEN THE WASHOUT SYSTEM REACHES
50 PERCENT OF THE DESIGN CAPACITY AND SHOULD NOT BE USED UNTIL PROPERLY
CLEANED OUT.
3.PLASTIC LINER SHOULD BE REPLACED AFTER EVERY CLEANING, THE REMOVAL OF
MATERIAL USUALLY DAMAGES IT.
4.REPAIR OR ENLARGE AS NECESSARY TO MAINTAIN CAPACITY FOR CONCRETE
WASTE.
5.IF LIQUIDS DO NOT EVAPORATE IT MAY BE NECESSARY TO VACUUM OR REMOVE THE
LIQUIDS AND DISPOSE OF THEM IN AN ACCEPTABLE METHOD.
6.WHEN CONCRETE WASHOUT SYSTEMS ARE NO LONGER REQUIRED THEY SHALL BE
CLOSED AND HOLES, DEPRESSIONS AND OTHER DISTURBANCES ASSOCIATED WITH
THE SYSTEM SHOULD BE BACKFILLED, GRADED, AND STABILIZED.
TEMPORARY SEED
TABLE 1. TEMPORARY SEEDING SPECIFICATIONS
AUG. 1 - SEPT. 1
GERMAN MILLET
WHEAT OR RYE 150 LBS. 1 TO 1½ INCHES SEPT. 15 - OCT. 30
SPRING OATS 100 LBS. 1 INCH MARCH 1 - APRIL 15
ANNUAL RYEGRASS 40 LBS.¼ INCH MARCH 1 - MAY 1
40 LBS.1 TO 2 INCHES MAY 1 - JUNE 1
SUDANGRASS 35 LBS.MAY 1 - JULY 30
BUCKWHEAT 60 LBS. APRIL 15 - JUNE 1
CORN (BROADCAST)300 LBS.MAY 11 - AUG. 10
SORGHUM 35 LBS.MAY 1 - JULY 15
1 TO 2 INCHES
1 TO 2 INCHES
1 TO 2 INCHES
1 TO 2 INCHES
1. PERENNIAL SPECIES MAY BE USED AS A TEMPORARY COVER, ESPECIALLY IF THE AREA TO BE
SEEDED WILL REMAIN IDLE FOR MORE THAN ONE YEAR.
2. SEEDING DONE OUTSIDE THE OPTIMUM SEEDING DATES INCREASES THE CHANCES OF SEEDING FAILURE. DATES
MAY BE EXTENDED OR SHORTENED BASED ON THE LOCATION OF THE PROJECT
SITE WITHIN THE STATE.
NOTES
1. MULCH ALONE IS AN ACCEPTABLE TEMPORARY COVER AND MAY BE USED IN LIEU OF TEMPORARY SEEDING, PROVIDED THAT IT IS
APPROPRIATELY ANCHORED.
2. A HIGH POTENTIAL FOR FERTILIZER, SEED, AND MULCH TO WASH EXISTS ON STEEP BANKS, CUTS, AND IN CHANNELS AND AREAS
OF CONCENTRATED FLOW.
SEEDBED PREPARATION
1. TEST SOIL TO DETERMINE PH AND NUTRIENT LEVELS.
2. APPLY SOIL AMENDMENTS AS RECOMMENDED BY THE SOIL TEST. IF TESTING IS NOT DONE, APPLY 400 TO 600 POUNDS PER ACRE
OF 12-12-12 ANALYSIS FERTILIZER, OR EQUIVALENT.
3. WORK THE SOIL AMENDMENTS INTO THE UPPER TWO TO FOUR INCHES OF THE SOIL WITH
A DISK OR RAKE OPERATED ACROSS THE SLOPE.
SEEDING
1. SELECT A SEED SPECIES OR AN APPROPRIATE SEED MIXTURE AND APPLICATION RATE FROM TABLE 1.
2. APPLY SEED UNIFORMLY WITH A DRILL OR CULTIPACKER SEEDER OR BY BROADCASTING. PLANT OR COVER SEED TO THE DEPTH
SHOWN IN TABLE 1.
NOTES
1. IF DRILLING OR BROADCASTING THE SEED, ENSURE GOOD SEED-TO-SOIL CONTACT BY FIRMING THE SEEDBED WITH A ROLLER OR
CULTIPACKER AFTER COMPLETING SEEDING OPERATIONS.
2. DAILY SEEDING WHEN THE SOIL IS MOIST IS USUALLY MOST EFFECTIVE.
3. IF SEEDING IS DONE WITH A HYDROSEEDER, FERTILIZER AND MULCH CAN BE APPLIED WITH THE SEED IN A SLURRY MIXTURE.
3. APPLY MULCH AND ANCHOR IT IN PLACE.
MAINTENANCE
1.INSPECT WITHIN 24 HOURS OF EACH RAIN EVENT AND AT LEAST ONCE EVERY SEVEN CALENDAR DAYS.
2. CHECK FOR EROSION OR MOVEMENT OF MULCH AND REPAIR IMMEDIATELY.
3. MONITOR FOR EROSION DAMAGE AND ADEQUATE COVER (80 PERCENT DENSITY); RESEED, FERTILIZE, AND APPLY 4. MULCH
WHERE NECESSARY.
4. IF NITROGEN DEFICIENCY IS APPARENT, TOP-DRESS FALL SEEDED WHEAT OR RYE SEEDING WITH 50 POUNDS PER ACRE OF
NITROGEN IN FEBRUARY OR MARCH.
REFERENCE IN CHAPTER 7 PAGES 31-33 IN THE INDIANA STORM WATER QUALITY MANUAL
TEMPORARY SEED
TABLE 1. TEMPORARY SEEDING SPECIFICATIONS
SEED SPECIES1 RATE PER ACRE PLANTING DEPTH OPTIMUM DATES2
NOTES:
1.THE SWPPP INFORMATION SIGN MUST BE LOCATED NEAR THE CONSTRUCTION
EXIT OF THE SITE, SUCH THAT IT IS ACCESSIBLE AND VIEWABLE BY THE
GENERAL PUBLIC, BUT NOT OBSTRUCTING VIEWS AS TO CAUSE A SAFETY
HAZARD.
2.ALL POSTED DOCUMENTS MUST BE MAINTAINED IN A CLEARLY READABLE
CONDITION AT ALL TIMES THROUGHOUT CONSTRUCTION AND UNTIL THE
NOTICE-OF-TERMINATION (NOT) IS FILED FOR THE PERMIT.
3.CONTRACTOR SHALL POST OTHER STORM WATER AND/OR EROSION AND
SEDIMENT CONTROL RELATED PERMITS ON THE SIGN AS REQUIRED BY THE
GOVERNING AGENCY.
4.SIGN SHALL BE LOCATED OUTSIDE OF PUBLIC RIGHT-OF-WAY AND EASEMENTS
UNLESS APPROVED BY THE GOVERNING AGENCY.
5.CONTRACTOR IS RESPONSIBLE FOR ENSURING STABILITY OF THE SWPPP
INFORMATION SIGN.
SWPPP INFORMATION SIGN
COPY
OF
NOI
COPY OF
IDEM
NOTICE OF
SUFFICIENCY
SWPPP INFORMATION
DETAILED DESCRIPTION OF THE LOCATION OF THE
SWPPP DOCUMENTATION (BINDER AND SITE MAPS)
ON THE SITE.
SIGN TO BE CONSTRUCTED
OF A RIGID MATERIAL, SUCH
AS PLYWOOD OR OUTDOOR
SIGN BOARD. SIGN MUST BE
CONSTRUCTED IN A MANNER
TO PROTECT DOCUMENTS
FROM DAMAGE DUE TO
WEATHER (WIND, SUN,
MOISTURE, ETC.).
"SWPPP INFORMATION" MUST
BE DISPLAYED PROMINENTLY
ACROSS THE TOP OF THE SIGN,
AS SHOWN IN THE DETAIL.3" MIN.3" MIN.COPY
OF
DRAINAGE
APPROVAL
LETTER
COPY
OF
CONSTRUCTION
SITE
NOTICE AS
APPLICABLE
COPY
OF
CONSTRUCTION
SITE
NOTICE AS
APPLICABLE
COPY
OF
CONSTRUCTION
SITE
NOTICE AS
APPLICABLE
(NO SCALE)
RU
N
O
F
F
EDGE OF PAVEMENT
RUNOF
F
RUNOFF
RUN
O
F
F
RUNOFF
RUNOFF
EDGE OF PAVEMENT
FOR SAG INLETS LOCATIONS (NO SCALE)
MAINTENANCE
- INSPECT DAILY.
- REMOVE ACCUMULATED SEDIMENT FROM PAVED AREA (DO NOT FLUSH WITH WATER) AFTER
EACH STORM EVENT. DEPOSIT SEDIMENT IN AN AREA WHERE IT WILL NOT RE-ENTER THE PAVED
AREA OR STORM DRAINS.
- INSPECT FOR DAMAGE BY VEHICULAR TRAFFIC AND REPAIR IF NEEDED.
_ WHEN CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED, REMOVE SEDIMENT, PROPERLY
DISPOSE OF ALL CONSTRUCTION MATERIAL, GRADE AREA TO THE ELEVATION OF THE STORM
DRAIN INLET TOP, THEN STABILIZE IMMEDIATELY.
COCONUT MAT INLET PROTECTION